Draft-regulator



P. MARCZYNSKI. mam esumes. APPLICATION FlLED FEB. 23; 1921' Patented; 1m.- 6, 1921'.

7 PEEP MEIEZHHEJRI UNITED srn'rss PATENT QFFlfiE.

DRAFT-REGULATOR.

Specification of Letters Patent.

.lPatented Dec. 6, 19%1.

Application filed February 28, 1921. Serial No. 44 5,6743.

To all whom it may concern:

Be it known that I, PETER MARozYNsKn a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Draft-Reg ulators; and I do hereby declare the follow ing is a full, clear, and exact description thereof.

This invention relates, to an improved draft regulator, especially adapted to be applied to the smoke pipe or flue of a furnace or other heating apparatus.

It is a well known fact wherever furnaces or stoves are used for heating, a large proportion of the heat developed by the combustion of the fuel, escapes up the chimney and is wasted.

A general object of the invention is to provide a device which will retain and utilize this heat, which would otherwise be wasted, and thus effect a great saving in fuel.

The object of the invention is particularly to provide means for retarding the escape of the heat up the chimney, and thus to re tain the heat in contact with the hot air pipes or radiating surfaces which are the direct means of transferring the heat to the atmosphere of the rooms to be heated.

It is a further object of the invention to provide a device of this character which may be made as a separate unit and inserted in an ordinary smoke pipe in place of the usual damper.

I accomplish these objects by means of a device, one form of which is illustrated in the accompanying drawing, in which- Figure 1 represents a front elevation of a furnace with my device applied thereto.

Fig. 2 is a longitudinal sectional view through the flue, the plane with reference to Fig. 3 being indicated by the line 2-2.

Fig. 3 is a longitudinal sectional view on the line 3-3 of Fig. 2, and

Fig. 4 is a cross sectional View on the line 4-4 of Fig. 2.

The numeral 5 designates a smoke pipe or flue which, in the present instance, is connected with the furnace F. The device which forms my invention comprises a frame which is adapted to be inserted inside the fine 5. This frame includes longitudinal members 6 and 7 which are preferably made of channel iron or of sheet metal bent into the shape of channel iron. These frame members 6 and 7 are connected atthe ends by end members 8 and 9 which may be made in different sizes to fit pipes of different diameters with which it may be used. In the frame I mount a series of plates 10, each plate being carried on a spindle 11 extending transversely of the flue and suitably mounted in the side members 6 and 7. These plates are all made of similar shape and size, and in the present instance are shown substantially in the shape of a semi-circle of the same radius as the flue. They are also arranged in staggered relation as shown in Fig. 2, so that when they extend transversely a tortuous passageway is formed, which will obstruct to some extent the passage of the hot air through the flue. The plates are provided with ears 12 which are pivotally connected to a rod 13 so that when one of the plates is rocked about its axis all the other plates are rocked at the same time. One of the spindles, for example the spindle 11', is extended outwardly through the wall of the flue and provided with a handle 14 by which its position may be adjusted. The spindle 11 is, of course, made easily removable to allow for the ready insertion of the device into the line.

It will be noted that by means of the handle 14, all of the plates may be adjusted simultaneously so as to extend longitudinally of the flue, thus leaving a substantially unobstructed passageway. It will be seen that I have thus provided an arrangement by which the draft may be effectively regulated or checked.

The flue may be provided with as many of these plates as is found desirable, the numher and size of the plates depending to a large extent, upon the length of the flue, and the course taken from the furnace or stove to the chimney. In other words, the greater the natural draft the greater will be the number and the size of the plates to be inserted in the flue. Not only will these plates retain the hot air in contact with the heating surface, and thus effect a great savingin coal, but will also act to maintain a uniform draft regardless of the velocity of the wind or other weather conditions outside.

I claim as my invention:

A draft regulator for flues comprising a frame to fit the inside of the flue, said frame including a pair of channel shaped side bars with the channels facing outwardly, a secries of substantially semi-circular plates normally extending in a plane substantially at right angles to the direction of the flue and each cutting off substantially half of the flue, said plates being in staggered relation and each having a pivot pin extending transversely through the center of the flue perpendicular to the straight edge of the plate and journaled at its ends in the channel bars, a flat rod extending in a plane between the fiat edges of the staggered plates and pivotally connected to each, whereby to maintain them all in parallel relation and means for moving one of the plates about its pivot and thereby simultaneously moving all of the other plates about their pivots.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of lVisconsin.

PETER MARGZYN SKI. 

